@article{ref1,
title="Mouth protector project for football players in Philadelphia high schools",
journal="Journal of the American Dental Association",
year="1958",
author="Cohen, A. and Borish, A. L.",
volume="56",
number="6",
pages="863-864",
abstract="<p>[Abstract unavailable]  Keywords: American football </p> <p>Language: en</p>",
language="en",
issn="0002-8177",
doi="",
url="http://dx.doi.org/"
}